Is the Def fluid quality poor on a GMC Duramax?
Is the Def fluid quality poor on a GMC Duramax?
According to Dennis Dillon techs who are (supposed) to be GM certified. They said there is no DTC errors. Those were cleared. #2 NOx sensor replaced and on the DIC portion it shows def fluid quality poor and shows speed restriced to 55mph.
Is the Chevy Duramax DEF system mandated by the EPA?
I understand DEF is a EPA mandated system, but that does not let Chevy engineers of the hook for making a DEF system that has made the Duramax totally UNRELIABLE! The DEF system has ruined several family vacations and made my Duramax truck UNRELIABLE for any trip longer than 100 miles from home. Why 100 miles you ask?
What’s the service EFs message on my Duramax?
Cleared the code and drove with just the Service EFS message on with hope it might just clear itself. Scheduled an appointment after a few days of driving and on the way to the dealership the message came up stating upon next restart limited to 55mph.
When does service exhaust fluid system come on?
Few days ago, my Service Exhaust Fluid System message came on and not long after CEL with P20b9 code (Reduction heater a cap or somewhere along those lines). Cleared the code and drove with just the Service EFS message on with hope it might just clear itself.
How to fix Duramax p20b9 service exhaust system?
Google “duramax P20B9” or “duramax dealer fix for P20B9” lots to read. I think you will find all your answers. Yeah, I’ve done that, countless hours of reading on Google and these forums, just can’t get a straight answer on what needs to happen after the tank is replaced, no error codes, and still getting the Service Exhaust System message
When to add Def to Duramax exhaust fluid?
Below 300 miles (500 km) of range, the range message or speed limiting messages will appear every time the vehicle is started. TIP: DEF should be added prior to receiving an Exhaust Fluid Empty DIC message; however, it may take several miles of driving for the DIC message to update.
Few days ago, my Service Exhaust Fluid System message came on and not long after CEL with P20b9 code (Reduction heater a cap or somewhere along those lines). Cleared the code and drove with just the Service EFS message on with hope it might just clear itself.
What’s the service exhaust light on a 2012 GMC Duramax?
2012 DURAMAX 6.6L HD Diesel Silvardo, DIC warning light came on service exhaust system. Added DEF, message doesn’t want to clear. Now my speed limit is reduced to 7 KM. How can I fix this problem. I have a 2012 gmc 2500 dura max. I’m 200 miles in on a 800 miles trip and my “service exhaust light ” comes on. This week I has oil and fluid topped off.
